[1]The three missing climbers. Image from Iran's Professional Sports Team Facebook page via @ANPour
According to the head of a Pakistani mountaineering club [2], the search for three missing Iranian climbers [3] has been called off, as of Sunday July 21, 2013.
The mountain climbers sent a call for help on Thursday July 18, on their way down from Broad Peak [4] after successfully reaching the 8,051-meter (26,414-foot) summit. [5]
Their distress call said they were exhausted and had run out of food. The three men were last in touch with Iran through a satellite phone on Saturday, July 20. Pakistani rescue teams were dispatched to find them, but failed.
The blog Altitude Pakistan has details about the Iranian Broad Peak [6] expedition and updates on the communication from the climbers as they ran into trouble during their descent.